Diff Output
RESULT
A text comparison tool that runs entirely in the browser — paste two versions of a document, contract, or piece of writing and see exactly what changed between them, word by word, with nothing uploaded to a server.
A contract redline, a second draft of an essay, two versions of a policy document — ClearDiff compares both texts word by word and highlights exactly what was added, removed, or left unchanged, making it possible to confirm what actually changed without reading both versions side by side line by line.
For most text, the comparison works at the word level, showing precise insertions and deletions. For very large documents, it automatically switches to a faster line-by-level comparison once the combined text passes a size threshold, keeping the comparison responsive even on long documents without needing any manual setting to adjust.
Once a comparison is complete, the result copies to the clipboard in one click — useful for pasting a summary of changes into an email or a review comment without re-explaining what was edited. The Swap function reverses which text is treated as the original, useful when a draft needs to be checked in the opposite direction.
No. The comparison runs entirely in the browser — neither text is sent to a server at any point.
Individual words by default, which catches smaller edits within a line. Very large texts automatically switch to line-by-line comparison to stay fast, without any setting to choose between the two.
No, ClearDiff compares exactly two texts — an original and a modified version — at a time.
The tool reports that the texts are identical rather than showing an empty or confusing result.